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Cushion|Natural|GIA

0.50ct H SI1 Cushion Natural Diamond

GD • H/SI1 • GIA 6521458289

Certificate GIA 6521458289

Diamond specifications and retailer prices

From £282 GBP
$378 USD
As of November 2, 2026
Save £496 GBP (64%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £778 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.5ct natural cushion diamond

This 0.5ct natural cushion sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6521458289. Listed at 12 retailers as of November 2, 2026, with prices from £282 to £778, a £496 spread on the same certified stone. MOH London lists it at £778. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle34.8°
OriginNatural
Grading LabGIA
CertificateGIA 6521458289
Dimensions4.84 × 4.21 × 2.93 mm
L/W Ratio1.15
Top View
4.84 mm4.21 mm0.50 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521458289
Side View
Table 66.0%Crown 37.3°Girdle: ThickPavilion 34.8°Culet: NoneDepth 69.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £778 GBP|Low: £210 GBP|High: £803 GBP|Avg: £424 GBP|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 3£282 GBP
Retailer 12£282 GBP
Retailer 5£306 GBP
Retailer 10£315 GBP
Retailer 8£387 GBP
Retailer 2£419 GBP
Retailer 9£422 GBP
Retailer 7£422 GBP
Retailer 11£452 GBP
Retailer 6£510 GBP
Retailer 4£542 GBP
MOH London£778 GBP

38 data points across 12 retailers

12 retailers£282 GBP to £778 GBP

B+
Cheapest Retailer
-
£282 GBP
$378 USD
Final sale: no returns
A
Retailer 2
-
£282 GBP
$379 USD
View
B+
Retailer 3
-
£306 GBP
$410 USD
View
B+
Retailer 4
-
£315 GBP
HK$3,300 HKD
View
B+
Retailer 5
-
£387 GBP
$519 USD
View
B+
Retailer 6
-
£419 GBP
View
B+
Retailer 7
-
£422 GBP
$566 USD
View
B+
Retailer 8
-
£422 GBP
View
B
Retailer 9
-
£452 GBP
$607 USD
View
B
Retailer 10
-
£510 GBP
€652 EUR
View
Retailer 11
-
£542 GBP
A$1,120 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
MOH London
99FF09F6D · Nov 2
£778 GBP
View
11 more retailers have this diamond
Prices start from £282 GBPSave up to £496 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.50ct Cushion
£282 GBP